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In a study of pregnant women and their ability to correctly predict the sex of their baby, 56 of the pregnant women had 12 years of education or less, and 39.3% of them correctly predicted the sex of their baby. Use a 0.01 significance level to test the claim that these women have no ability to predict the sex of their baby, and the results are not significantly different from those that would be expected with random guesses. Identify the null hypothesis, alternative hypothesis, test statistic, p-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution. a. Identify the null and alternative hypothesis b. The test statistic is z= c. The P-value is d. Identify the conclusion about the null hypothesis and the final conclusion that addresses the original claim. ____H0. There ______ sufficient evidence to warrant rejection of the claim that these women have no ability to predict the sex of their baby. The results for these women with 12 years of education or less suggests that their percentage of correct predictions _____ very different from results expected with random guesses.
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
seven persons are staying at a hotel. the hotel has twenty-five floors each with the same number of rooms. each of the
The data in the following tables are some of the results of an Internal Revenue Service survey of taxpayers. Analyze and interpret the data.
the average length of stay at a local hospital is 4.9 days. assuming a population standard deviation of 3.5 days what
Evaluate the performance of the judges.
Nationwide, GMAT scores in a particular year had an average of 528 with an SD of 112 and the scores roughly followed a normal curve. If a student scored 600 on the exam, approximately what percentage of test-takers scored below this student?
1. determine the number of ways in which a jury of 6 men and 6 women can be selected from a group of 14 men and 13
in the design of an electromechanical product 12 components are to be stacked into a cylindrical casing in a manner
Using an appropriate hypothesis test, at a 5% level of significance, can you conclude that there is any difference between the average value between houses that have a fireplace (Fireplace = 1) and houses that don’t have a fireplace (Fireplace = 0)?
A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15
Find a 95 percent confidence interval for the population mean concentration of uric acid in this patients blood. The concentration of uric acid in this patient's blood.
A standard deviation of $12. Three solar homes reported monthly utility bills of $55, $53, and $51. Which of the following statements is true?
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